source: psi/trunk/src/alerticon.cpp@ 86

/*
 * alerticon.cpp - class for handling animating alert icons
 * Copyright (C) 2003  Michail Pishchagin
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "alerticon.h"
#include "common.h"
#include <qtimer.h>
#include <qapplication.h>

//----------------------------------------------------------------------------
// MetaAlertIcon
//----------------------------------------------------------------------------

class MetaAlertIcon : public QObject
{
        Q_OBJECT
public:
        MetaAlertIcon();
        ~MetaAlertIcon();

        Impix blank16() const;
        int framenumber() const;

signals:
        void updateFrame(int frame);
        void update();

public slots:
        void updateAlertStyle();

private slots:
        void animTimeout();

private:
        QTimer *animTimer;
        int frame;
        Impix _blank16;
};

static MetaAlertIcon *metaAlertIcon = 0;

MetaAlertIcon::MetaAlertIcon()
: QObject(qApp)
{
        animTimer = new QTimer(this);
        connect(animTimer, SIGNAL(timeout()), SLOT(animTimeout()));
        animTimer->start(120 * 5);
        frame = 0;

        // blank icon
        QImage blankImg(16, 16, 32);
        blankImg.fill(0);
        blankImg.setAlphaBuffer(true);
        _blank16.setImage(blankImg);
}

MetaAlertIcon::~MetaAlertIcon()
{
}

Impix MetaAlertIcon::blank16() const
{
        return _blank16;
}

void MetaAlertIcon::animTimeout()
{
        frame = !frame;
        emit updateFrame(frame);
}

void MetaAlertIcon::updateAlertStyle()
{
        emit update();
}

int MetaAlertIcon::framenumber() const
{
        return frame;
}

//----------------------------------------------------------------------------
// AlertIcon::Private
//----------------------------------------------------------------------------

class AlertIcon::Private : public QObject
{
        Q_OBJECT
public:
        Private(AlertIcon *_ai);
        ~Private();

        void init();

public slots:
        void update();
        void activated(bool playSound);
        void stop();

        void updateFrame(int frame);
        void pixmapChanged(const QPixmap &);

public:
        AlertIcon *ai;
        Icon *real;
        bool isActivated;
        Impix impix;
};

AlertIcon::Private::Private(AlertIcon *_ai)
{
        if ( !metaAlertIcon )
                metaAlertIcon = new MetaAlertIcon();

        ai = _ai;
        real = 0;
        isActivated = false;
}

AlertIcon::Private::~Private()
{
        if ( isActivated )
                stop();

        if ( real )
                delete real;
}

void AlertIcon::Private::init()
{
        connect(metaAlertIcon, SIGNAL(update()), SLOT(update()));
        connect(real, SIGNAL(iconModified(const QPixmap &)), SLOT(pixmapChanged(const QPixmap &)));

        if ( option.alertStyle == 2 && real->isAnimated() )
                impix = real->frameImpix();
        else
                impix = real->impix();
}

void AlertIcon::Private::update()
{
        stop();
        activated(false);
}

void AlertIcon::Private::activated(bool playSound)
{
        if ( option.alertStyle == 2 && real->isAnimated() ) {
                if ( !isActivated ) {
                        connect(real, SIGNAL(pixmapChanged(const QPixmap &)), SLOT(pixmapChanged(const QPixmap &)));
                        real->activated(playSound);
                        isActivated = true;
                }
        }
        else if ( option.alertStyle == 1 || (option.alertStyle == 2 && !real->isAnimated()) ) {
                connect(metaAlertIcon, SIGNAL(updateFrame(int)), SLOT(updateFrame(int)));
        }
        else {
                impix = real->impix();
                emit ai->pixmapChanged(impix.pixmap());
        }
}

void AlertIcon::Private::stop()
{
        disconnect(metaAlertIcon, SIGNAL(updateFrame(int)), this, SLOT(updateFrame(int)));

        if ( isActivated ) {
                disconnect(real, SIGNAL(pixmapChanged(const QPixmap &)), this, SLOT(pixmapChanged(const QPixmap &)));
                real->stop();
                isActivated = false;
        }
}

void AlertIcon::Private::updateFrame(int frame)
{
        if ( !metaAlertIcon ) // just in case
                metaAlertIcon = new MetaAlertIcon();

        if ( frame )
                impix = real->impix();
        else
                impix = metaAlertIcon->blank16();

        emit ai->pixmapChanged(impix.pixmap());
}

void AlertIcon::Private::pixmapChanged(const QPixmap &p)
{
        impix = real->frameImpix();

        emit ai->pixmapChanged(p);
}

//----------------------------------------------------------------------------
// AlertIcon
//----------------------------------------------------------------------------

AlertIcon::AlertIcon(const Icon *icon)
{
        d = new Private(this);
        if ( icon )
                d->real = new Icon(*icon);
        else
                d->real = new Icon();

        d->init();
}

AlertIcon::~AlertIcon()
{
        delete d;
}

bool AlertIcon::isAnimated() const
{
        return d->real->isAnimated();
}

const QPixmap &AlertIcon::pixmap() const
{